HESI A2 Math Practice Exam

Correct Answer: B

Rationale: To make yellow balls 65% of total, they need to be 65 out of every 100 balls. Let the number of yellow balls be Y. Total balls = Y + X. So, Y/(Y+X) = 65/100. Solving, Y = 13X. To make yellow balls 65%, the ratio of yellow to total should be 13:20. So, 13/(13+20) = 13/33 = 39.4%, which means 60.6% are non-yellow balls. To increase yellow balls to 65%, we need to make non-yellow balls 35%. Therefore, 35% of total balls should be non-yellow. This means 35% of total balls should be non-yellow. Hence, the correct answer is 50 (option B). Other choices are incorrect as they do not align with the logic of maintaining the 65% yellow ball ratio.

Correct Answer: D

Rationale: To find out how many questions Brian answered correctly on the second test, we first calculate the 30% increase from his initial score of 150 questions. 30% of 150 is 45, so his new score is 150 + 45 = 195 questions. Therefore, the correct answer is D (195). Choice A (105) is incorrect because it is less than the initial score of 150. Choice B (120) is incorrect because it does not account for the 30% increase. Choice C (180) is incorrect as it is the result of adding 30% to the initial score, not the final score after the increase.

Correct Answer: C

Rationale: The correct answer is C (Early afternoon to bedtime) because working from 1300 to 2000 corresponds to the time frame of early afternoon to bedtime. 1300 is 1:00 PM in the afternoon, and 2000 is 8:00 PM in the evening. This aligns with the early afternoon to evening shift. Incorrect choices: A: Early morning to early afternoon - This is incorrect as the healthcare professional's shift starts in the afternoon, not the early morning. B: Lunchtime to midnight - This is incorrect as the shift ends at 8:00 PM, not midnight. D: Midnight to sunrise - This is incorrect as the shift starts in the afternoon, not at midnight.

Correct Answer: C

Rationale: Failed to generate a rationale after 5 retries.

Correct Answer: A

Rationale: To find the ratio of women to the total number of students, we need to add up the number of women and divide it by the total number of students. Let's assume there are 4 women and 7 men in the class. The total number of students would be 4 (women) + 7 (men) = 11. So, the ratio of women to the total number of students is 4:11. Simplifying this ratio gives us 4:7, which is choice A. Therefore, choice A is correct. Choices B, C, and D are incorrect because they do not represent the correct ratio of women to the total number of students in the class based on the given information.